Mounting and fixing structure for optical fiber of photoelectron device

Abstract

Disclosed is a mounting and fixing structure for an optical fiber of a photoelectron device. The photoelectron device comprises a tube shell (120), with a tail tube (140) extending outwards being arranged on the tube shell (120). One end of an optical fiber is provided with a coupling structure (340), and the optical fiber comprises a fiber core (201) and an envelope (202) which is made of the same material as the fiber core (201) and covers the fiber core. One end of the optical fiber close to the coupling structure (340) forms a bare optical fiber (230) which consists of a fiber core (201) and an envelope (202), and the other end forms a basic optical fiber (200) which consists of a fiber core (201), an envelope (202) and a coating (203); and the optical fiber penetrates into the tail tube (140). The bare optical fiber (230) of the optical fiber is welded and fixed to the tail tube (140) through glass solder (160). The mounting and fixing structure for an optical fiber has the advantages of a simple structure and process, lower time consumption and a low cost, and provides high usage reliability while meeting the requirement of gas tightness.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a photoelectron device, in particular to an optical fiber-mounted photoelectron device with excellent gas tightness.BACKGROUND OF THE INVENTION[0002]Photoelectron devices in the field of optical communication includes many active type devices, such as optical emitter, optical detector, optical amplifier and the like, and many passive type devices, such as optical coupler, optical wavelength division multiplexer / demultiplexer, optical isolator, optical filter and the like. As shown in FIG. 1, light conduction between the various photoelectron devices 100 and the outside is mostly achieved with an optical fiber 110 of certain standard specifications, to realize the transmission of light signals and light energy between the outside and the photoelectron device 100. The mounting shell of the photoelectron device 100, also referred to as tube shell, consists generally of a tube body 120 and a tube closure 130. The tube body 120...

AI Technical Summary

Benefits of technology

The present invention aims to provide a simpler and more cost-effective way to mount and fix an optical fiber on a photoelectron device. The new method uses a mounting and fixing structure that provides better reliability and resistance to environmental factors, while still maintaining good gas tightness. This structure offers a variety of mechanical strength protections and can be used for various photoelectron devices.

Problems solved by technology

Those technologies for metallization of the above-mentioned optical fiber and mounting and fixing thereof on the tube body have already been widely applied in the industry; they are all featured by excellent gas tightness, but such defects as complex structure and process, high cost and large time consumption still exist.

With the rapid development of optical communication technology application, there has been an increasing demand on the cost of photoelectron devices, and the cost problem of the metalized optical fibers has become increasingly prominent.

In addition, in the case that the process for mounting and fixing by welding of the metalized optical fiber and the metal solder is adopted, thermal stress resulted from the metal and the solder thereof is likely to result in positional movement of the coupling structure 340 under an environmental temperature change, and under some extreme situations, is also likely to result in rupture of the bare optical fiber 230, which is extremely fragile in structure.

In a few new products with a higher demand on coupling, this problem has appeared and become prominent, and the existing technologies for mounting and fixing of the optical fiber have become highly unsuitable for continued use.

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